Water heating unit for oil burners



1943- w. H. WOOD, JR 2,325,824

WATER HEATING UNIT FOR OIL BURNERS Filed March 6, 1940 r1 I I 3 0 28 INVENTOR ATTORNEYS Paten ted Aug. 3,1943 7 p '7 J UNI-TED "STAT This invention relates to water heating units 7 for oil burners, and'm'ore particularly-a water heating unit for use with the common type of -up-' right cylindrical burner now generally used in cooking ranges in a f re box located in front'of the oven, and has for an object to provide a con-j struction and arrangement of water heating unit which does not interfere with the heating of the oven by the burner, which absorbs heat from the burner which toa large extent might be wasted,

and which is not liable to become overheated with consequent overheating and boiling of thewater. It is also an'object of therinvention to'provide a water heating unit for range oilburners which is simple in construction and effective in operal tion, does not interfere with heating of vessels located over the burner, and does not interfere with the lifting and easy removal of the burner from its location in the renewal or repair. 7

With the foregoing and other objects in View Ihave devised the construction and arrangement illustrated in the accompanying drawing forming a part of this specification, it, however, being understood that I am not limited to the specific construction and arrangement illustrated, but various changes and modifications may be employed within the scope of the invention.

In this drawing: J p

, Fig. 1 is a longitudinal section of theforward portion of a cooking range taken substantially on line l-l of Fig. 2 and showing the burners and my improved water heating unit in top plan View located within the firebox;

Fig. 2 is a vertical section substantially on line 2-2 of Fig. '1;' V

Fig. 3 is a side elevation of the preferred form of heating unit removed from the stove and flattened out to more clearly show the construction;

Fig. 4 is a similar View of a modified construction; and

Fig. 5 is a top plan view thereof with a portion broken away to more clearly show the construction. l

There are several types of water heating units for association with oil burners used in cooking ranges and which have caused considerable trouble and have definite objections. Usually there are two oil burners used in the fire box in front of the oven. If the water heating unit is a coil or other type of unit extending all the way around a burner it shuts off so much heat of the burner from the oven that the oven doesnt operate properly, and usually under such circumstances when the oven is used even for moderate firebox for cleaning,

baking temperaturesit is necc'esar'y toj lightzthe second burner'. -As in this arrangementthe water heating coil or'runit extendsbetweenthe ,two burners the heat-from the second burneradde'd tothat of'thefirst bi'irner heat's the wat'er toofhot so that it boils; 1-lri0the r 'ar'rangementds to put the-waterheating'coil or unit overthej" top of one of the burnersfiThis doesnt interfereobjetion ably with heating of the 'oven, but': does greatly interfere with. the 'cookiiig of anything overthe burner, and this arrangement also has'the objection of heating the water too hot. It further in.-

terferes'with the lifting out or removal of" the burner for cleaning, renewal or repair.

f With my improved construction and arrangev ment I have eifectively overcome theseobjeetions. In the drawing acookin'g range is indicated somewhatfcliagrammatically at lll having'the usual oven i l'in front o'f'whi'ch' is thel'fire box 52 with flue lfi'leadi'n'g mm the-firebox over the top of the oven and-flue I *conne'cting therewithat the back" of the ovenand extending forwardly and rearwardly under the oven and thento the chirn-f ney for circulating products of combustion from r the burnerarouncl' the oven in the usual manner. In the firebox i2 is located a pairiof uprightoil burners l5 andis, preferably of the type having one or more perforated cylindrical shells l i "wfith-' in which the vaporized; oil is burned'in the usual man'nenan oil supply pipe 18 being shown dia plylilpj I p My improved water heating unit is shown atfid. This may be of different constructions but pref e'rably as shown 'in Figs. 1, ,2 and 3; comprises a tubeor pipe bent backand forth'in Zig-zag relagrammatically leading frorn'any suitable oil suption in a direction circumferentially of the burner and with the different sections located one above the other and also preferably spaced from each other. Also, as shown in Figs. 1 and2 they are curved horizontally in the direction of the circumference of the burner so as to lie substantially.

parallel with the surface of the outer shell II. The convolutions, however, are of such a length as to embrace only a portion of the circumference ofthe burner as indicatedby the arc 2| of Fig. 1,

leaving the opposite side of the burner fully exposed. In the arrangement shown this unitpref erably embraces approximately one-half of the burner, and is arranged on the outer side thereofoppositeto the side on which the oven is located.

fore not subjected to any great extent to the heat from the burner it, but receives the greater pro- 7 .portion of its heat from the burner l5.

It will also be seen from Fig. 1 that asit is located on the opposite side of the burner from the oven it does not interfere with the direct heating of the oven from the burner, as indicated by the lines 22 tending to represent broadly heat rays,.but itdoes intercept and absorb the heat rays passing outwardly from the burner on the j opposite side: This is heat'which would ordinarily be largely lost as there is nothing on that side of the burner to' be heated, and therefore this heating unit, by absorbing only heat which might toalarge extent be otherwise wasted, increases the efficiency of the stove without interfering with the heating of the oven. Therefore the single burner I5 supplies suflficient heat to the oven for ordinary baking operations, but'if a very hot oven is desired the second burner l6 may be operated. However, in view of. the improved con- I structionand arrangement ofthe water heatingunit, the usevofethe second burner doesrnot heat the water heating-unit to an extent to overheat it and cause the water to boiL; -'Also, thecoilsof the unit are spaced from; each other to permit the.

this tubular construction is preferred. In each Tcase it is preferred that the heating unit extend for substantially the full height of the burner as shown, but it'will of coursebe understood if the water is sufficiently'heated by a unit of less height such a unit may beemployed if desired.

It will thus be seen that with this improved construction and arrangement the burner supplies direct heat to the oven, and the water heater burner.

in no way shields the oven fromthe heat of the Theheater takes the heat'that is radiated in the direction away from the oven which would to a large extent be lost, and also does not interfere with the heating of the oven by the second burner nor is the unit overheated by this burner. As the. water heater is located at one side of the burner it does not interfere with the lifting out of the burner for renewal, cleaning or repair, and it also does not interfere with heating and cooking operations on the usual grids 3| in the top of the stove over the burner. It gives plenty of hot water without getting too hot and saves heat as it is on the outer side of :theburner where there is nothing to be heated.

unit 20, that is, on the opposite side of the burner from the oven, and-arranged so as not to extend materially into the space between the two burners. It may have-one or; more baffles 26 to increase the path of circulation of water through the element, and each element 20 or 23 may have inlet and outlet connections 21 and 28 for connection to a storage tank 29 to lead the cooler water to the unit from the tank and carry the the unit if made with continuous walls may ine terfere somewhat with the flow of air to the .burner and thus interfere with combustion on the side of the burner next to the heating unit. This may be cured by providing transverse tubes 30 through the walls of the unit 23 forconducting Having thus set forth the nature of my invention, what I claim is 1. In a cooking. rangerhaving an oven and a fire box at the; front thereof, a pair of spaced upright oil burners in the fire box having upright cylindrical shells, an upright 'water heater comprising apipe extending back and fo-rthin vertically spaced zig-Zag arrangement located closely adjacent on the opposite side of one of the burners from the oven and curved to embrace-only approximately one-half the circumference of the burnerso that the, space between the burner and the oven in clear, said heater being also located on the opposite side of the first burner from the second burnerwhereby the space between the burners is clear, and means for leading water to and from the water heater.

2; In a cooking range having an oven and a rectangular fiIGbOXWBXtBIldlHg across the front thereof, a pair of laterally spaced-upright oil I; burners in the fire box having upright cylindrical shells, an upright water heater comprising a pipe heated water back to the tank. The form 23 of extending back and forth in vertically spaced zigzag arrangement and curved to embrace a portion only of one of the burners, said heater being located between said burner, and the adjacent outer corner of the fire box whereby the space between the two burners and the space between the burners and the oven are free, and means for leading water to and from the heater,

' wiLLIAM H. ,woon, JR, 

